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Compagnie Electro Mecanique SA
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Compagnie Electro Mecanique SA
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Application filed by Compagnie Electro Mecanique SAfiledCriticalCompagnie Electro Mecanique SA
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Publication of FR622954ApublicationCriticalpatent/FR622954A/fr
Perfectionnements aux échangeurs thermiques tubulaires pour installations d'huile combustible, et pour réchauffeurs d'eau d'alimentation, évaporateurs, condenseurs et réfrigérateurs
Procédé et dispositif pour la fabrication de tuyaux à ailettes hélicoïdales obtenues par l'enroulement de champ et à chaud d'un ruban de tôle non ondulée par avance